12 lines
373 B
Plaintext
12 lines
373 B
Plaintext
Branch over following JMP ($nnnn) instruction
|
|
A branch with argument $03 skips the following 3 bytes.
|
|
A JSR instruction has the initial byte value of $20.
|
|
Therefore $F0 $XX $20 is part of a
|
|
Bxx +
|
|
JMP ($xxxx)
|
|
*
|
|
|
|
instruction sequence.
|
|
This is a very common construction, and the logical way to
|
|
conditionally call a routine via a vector, and therefore is not copyrightable.
|